Add another optimization from PR2330. Also catch some missing cases that are

similar.

llvm-svn: 53451

1 files changed, 19 insertions, 0 deletions

diff --git a/llvm/test/Transforms/InstCombine/2008-07-10-ICmpBinOp.ll b/llvm/test/Transforms/InstCombine/2008-07-10-ICmpBinOp.ll
new file mode 100644
index 00000000000..50533db06d5
--- /dev/null
+++ b/llvm/test/Transforms/InstCombine/2008-07-10-ICmpBinOp.ll
@@ -0,0 +1,19 @@
+; RUN: llvm-as < %s | opt -instcombine | llvm-dis | not grep add
+; RUN: llvm-as < %s | opt -instcombine | llvm-dis | not grep mul
+; PR2330
+
+define i1 @f(i32 %x, i32 %y) nounwind {
+entry:
+  %A = add i32 %x, 5
+  %B = add i32 %y, 5
+  %C = icmp eq i32 %A, %B
+  ret i1 %C
+}
+
+define i1 @g(i32 %x, i32 %y) nounwind {
+entry:
+  %A = mul i32 %x, 5
+  %B = mul i32 %y, 5
+  %C = icmp eq i32 %A, %B
+  ret i1 %C
+}